505312430 has 16 divisors (see below), whose sum is σ = 1039500000. Its totient is φ = 173249952.

The previous prime is 505312427. The next prime is 505312439. The reversal of 505312430 is 34213505.

It is a junction number, because it is equal to n+sod(n) for n = 505312396 and 505312405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505312439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3609305 + ... + 3609444.

It is an arithmetic number, because the mean of its divisors is an integer number (64968750).

Almost surely, 2^505312430 is an apocalyptic number.

505312430 is an abundant number, since it is smaller than the sum of its proper divisors (534187570).

505312430 is a wasteful number, since it uses less digits than its factorization.

505312430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7218763.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 505312430 is about 22479.1554556660. The cubic root of 505312430 is about 796.5016145489.

Adding to 505312430 its reverse (34213505), we get a palindrome (539525935).

The spelling of 505312430 in words is "five hundred five million, three hundred twelve thousand, four hundred thirty".